The calculated distance (air line) between Gabčíkovo and Nové Zámky is approximately 28 miles respectively 45 kilometers.
By car or train, the actual journey to Nové Zámky is certainly longer, as only the direct route (as the crow flies) between Gabčíkovo and Nové Zámky has been calculated here.
Air line (approximately)
45 kilometers
24 nautical miles